Tyrosine is one of 20 amino acids used by human cells to synthesize the proteins they need. The common form of tyrosine called L-tyrosine is actually synthesized from another amino acid, phenylalanine.
Tyrosine is the precursor of several important adrenal and thyroid hormones, including epinephrine, norepinephrine, and thyroxine.
L-tyrosine is synthesized into melanin, the dark pigment which helps protect skin against the harmful effects of ultraviolet light. The thyroid hormones which have a role in nearly every biological process also contain tyrosine.
- Tyrosine is an important amino acid which forms part of the structure of almost all proteins in the body.
- Tyrosine is a precursor to several important neurotransmitters.
- Tyrosine helps to form the bioactive factors vital to cellular growth and maintenance.
- Tyrosine supports the thyroid gland with nutrients and is essential for proper thyroid functioning.
- Tyrosine is used by the body to help synthesize thyroid hormones.
- Because it is involved with the function of neurotransmitters, L-tyrosine has been used to support mood.
- Tyrosine is reported to have antioxidant qualities.
- Tyrosine aids in the production of melanin, the pigment responsible for hair and skin color.
- Tyrosine is significantly involved in the functioning of the adrenal and thyroid glands.
- Tyrosine may benefit mood during periods of acute stress, and is involved in the production of stress hormones epinephrine and norepinephrine. Stress may inhibit the body's ability to produce enough tyrosine from phenylalanine.
- Tyrosine is involved in the synthesis of enkephalins a collection of substances which have soothing effects.
Dietary sources of tyrosine and L-tyrosine are derived from animal and vegetable proteins such as:
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